Water guard for rock drills



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FRED M. SLATER, OF EASTON, PENNSYLVANA, ASSGNOR'TO INGEBJSOLL-BAND COM- PANY, OF JERSEY CTY, NEW JERSEY, A CRORATN OF NEW JERSEY.

WATER GARD'FDR ROCK DRILLS.

Application filed September 10, 1923. Serial No. 651,791.

To all who/1n it vmay Concern-f Be it known that I, Fin-1n M. Sinrrnn, a citizen of the United States, and a resident of Easton, county of Northampton, and State of Pennsylvania, have invented a certain Tater Guard for Rock Drills, of which the following is a specification accompanied by drawings.

This invention relates to fluid actuated rock drills of the han'imer type, but more )articularl f to a front headwater guard for stope drills.

In the operation of stope drills, much annoyance and discomfort is occasioned to the operators by the muddy water from the drilled hole which runs down the drill steel and is thrown into the faces and upon the persons of the operators, byv centrifugal force due to the rapid rotation of the front head parts of the drill, and 'the primary object of the present invention is to overcome this annoyance in a simple manner,

Another object of the invention is to produce means for preventing muddy water from being thrown upon the operator of a stope drill, which means are adapted to be cheaply manufactured and readily applied to the front head of the machine.

Further objects of the invention will hereinafter appear and the invention is shown in one of its preferred forms inthe accompanying drawings, in which-d Figure l is a vertical sectional view oi' the front end portion of a stope drill,

Figure is a side elevation of a water guard, and

Figure 8 is a view similar to lfigure 2 with the water guar-d turned at right angles.

Referring to the drawings, A designates the cylinder of a fluid actuated stope drill of the hammer type, inwhich the hammer piston B is adapted to reciprocate. Between the cylinder A and the front head C, is placed the usual front cylinder bushing D, in which is located the anvil block lil. The chuck F in the front head G is adapted to receive the drill steel Gr to which blows of impact of the hammer piston are transmitted through the anvil block E. Any suitable means for rotating the drill steel Gr may be provided, but in this instance independent rotation means are indicated and the chuck F is formed with gear teeth H meshing with the pinion J on the driving shaft l, which is adapted to be rotated by a suitable fluid actuated motor. The usual water tube L extends through the piston B and the anvil block E into the 4drill steel G for introducing water under pressure to the drill hole G, so that the cuttings may be vashed from the hole.

ln orde-r to prevent the slime formed by the mixture of cuttings and water in the hole O, which runs down the steel G, from enterin between the chuck F, and the front head C a shroud, preferably in the form of a plate l), may be secured to the chuck by means of a split ring Q, so that mud and water will flow over the sides of the plate and not ent-er the rotating parts of the drill. ln accordance with the present invention, a water guard in the .form of a cap l?. is adapted to he attached to the front head C and is formed with a hole R through which the drill steel G extends. A series of slots Si are formed in the sides of the cap R and are inclined downwardly, so that the stream of mud and water from the drilled hole which runs down the steel through the hole lt, onto the rotating chuck, is thrown against the sides of the cap, from which it flows downwardly through the inclined holesS along the sides of the drill- In this manner, the drill runner is protected and may operate the drill without the annoyance and discomfort of having mud and watericonstantly thrown in his face or upon his person.

ln this instance, the cap R is split as at T and lugs J are formed on the cap for receivingthe holt V on which is threaded the nut W, so that the cap may be readily removed from or attached to the front head, as desired.

rlhis cap is cheap to manufacture and has proved to be an effective means for prevent ing mud and water from being thrown upon the drill operator.

l claim:

A rock drill comprising a cylinder, a hammer piston within the cylinder, a front head for the cylinder, a chuck within the front head adapted to receive a drill steel, said chuck being grooved at its end, a shroud in the form of `zr disk placed over the end of the chuck beneath said groove, L split ring in the groove holding the shroud in place, :L removable water guard in the form of a split cap *having rearwardly directed apertures in its sides, locted over the end of i the front head, whereby the shroud within the cup may be removed by removing` the 10 cap.

In testimony whereof I have signed this specification FRED M. SLATER. 

